US President Donald Trump cuts short a weekend at Camp David and returns to the White House a day earlier than previously planned. Multiple outlets report that he was expected to stay through Sunday but instead comes back on Saturday.

The reports say the administration does not provide a specific explanation for the change. One outlet notes that shifts in White House travel plans can happen for reasons such as weather, citing forecasts for rain and thunderstorms at Camp David on Sunday.

Context for the timing centers on escalating regional tensions. Sources link Trump’s return to developments described by a Saudi-led coalition fighting Yemen’s Houthis, which says the Iran-backed group fires a ballistic missile at Riyadh at dawn after a fire breaks out near the Saudi capital’s international airport. In response, the US State Department and several US embassies issue security alerts to Americans, citing the potential for unforeseen escalation and pointing to the Houthis’ actions against Saudi targets, including civilian airports. The extent to which those events are the definitive reason for Trump’s travel change is not stated by the sources.